نتایج جستجو برای: irrigated farmlands

تعداد نتایج: 9911  

2014
Viyachai Taweesak Thohirah Lee Abdullah Siti Aishah Hassan Nitty Hirawaty Kamarulzaman Wan Abdullah Wan Yusoff

Influences of irrigation frequency on the growth and flowering of chrysanthemum grown under restricted root volume were tested. Chrysanthemum cuttings (Chrysanthemum morifolium "Reagan White") were grown in seedling tray which contained coconut peat in volumes of 73 and 140 cm(3). Plants were irrigated with drip irrigation at irrigation frequencies of 4 (266 mL), 6 (400 mL), and 8 (533 mL) time...

2009
Elizabeth Brinck Carol Frost

Please cite this article in press as: Brinck, E., Fr doi:10.1016/j.apgeochem.2009.09.001 Gypsum and S are applied to soils being irrigated with Na–HCO3 dominated coalbed natural gas (CBNG) produced water to protect soil structure and fertility. Wyoming law requires beneficial use of produced water and irrigation with CBNG produced water in the semi-arid Powder River Basin is becoming more commo...

Journal: :Journal of environmental quality 2001
R F Spalding D G Watts J S Schepers M E Burbach M E Exner R J Poreda G E Martin

The impact of improved irrigation and nutrient practices on ground water quality was assessed at the Nebraska Management System Evaluation Area using ground water quality data collected from 16 depths at 31 strategically located multilevel samplers three times annually from 1991 to 1996. The site was sectioned into four 13.4-ha management fields: (i) a conventional furrow-irrigated corn (Zea ma...

Journal: :Journal of medical entomology 2006
Nicholas C Manoukis Mahamoudou B Touré Ibrahim Sissoko Seydou Doumbia Sekou F Traoré Maria A Diuk-Wasser Charles E Taylor

Malaria vectors can reach very high densities in villages near irrigated rice fields in Africa, leading to the expectation that malaria should be especially prevalent there. Surprisingly, this is not always the case. In Niono, Mali, villages from nonirrigated areas have higher malaria prevalence than those within the irrigated regions, which suffer from higher mosquito numbers. One hypothesis e...

2010
M. C. Lamb R. B. Sorensen R. C. Nuti D. L. Rowland W. H. Faircloth C. L. Butts J. W. Dorner

Peanut quality parameters were analyzed across four irrigation levels during the 2002 through 2007 crop years. The peanut quality parameters consisted of total sound mature kernels and sound splits (farmer stock grade), shelling outturn by commercial edible size, accept and reject kernels by commercial edible size, seed germination, and aflatoxin. The four irrigation levels consisted of a full ...

2014
A L Thebo P Drechsel E F Lambin

The role of urban agriculture in global food security is a topic of increasing discussion. Existing research on urban and peri-urban agriculture consists largely of case studies that frequently use disparate definitions of urban and peri-urban agriculture depending on the local context and study objectives. This lack of consistency makes quantification of the extent of this practice at the glob...

احمدی انگالی, کامبیز, تکدستان, افشین, جعفرزاده حقیقی فرد, نعمت الله, رمضانی, زهرا, زهره وند, فاطمه, غریبی, حوریا, نظر زاده, عادل,

Background and purpose: Heavy metals due to non-biodegradability and having physiological effects on living organisms are particularly important. Due to the low mobility, these elements gradually accumulate in soil and eventually enter the food chain and threaten human and other organism’s health. Therefore, measurement and monitoring of heavy metal concentrations is necessary to . The aim of t...

Journal: :Journal of medical entomology 2006
Muhammad Mukhtar Jeroen Ensink Wim Van der Hoek Felix Prashantha Amerasinghe Flemming Konradsen

The objective of the current study was to investigate the role of waste stabilization ponds (WSP) and wastewater-irrigated sites for the production of mosquitoes of medical importance. Mosquito larvae were collected fortnightly from July 2001 to June 2002 in Faisalabad, Pakistan. In total, 3,132 water samples from WSP and irrigated areas yielded 606,053 Culex larvae of five species. In addition...

2013
KHADEEJA REHMAN SOBIA ASHRAF UMER RASHID MUHAMMAD IBRAHIM SAADIA HINA TEHREEMA IFTIKHAR SHAHLA RAMZAN

Due to insufficient clean water resources wastewater is largely used for irrigation of vegetables in many developing countries, particularly in Pakistan. As a result, vegetables in spite of providing nutrients also accumulate toxic metals and causes health risks. In the present study, comparison of heavy metal contents, using two digestion methods, in fresh and wastewater-irrigated vegetables w...

Journal: :Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes 2010
Peter O Otieno Joseph O Lalah Munir Virani Isaac O Jondiko Karl-Werner Schramm

This study was undertaken to determine the concentrations of carbofuran residues in water, soil and plant samples from selected sites in the farmlands in Kenya and to demonstrate the impact of Furadan use on the local environment. Soil, water and plant samples obtained from agricultural farmlands where the technical formulation Furadan has been used extensively showed high environmental contami...

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